Method of high speed searching for a desired tape portion in a d

Details Method of high speed searching for a desired tape portion in a d Method of high speed searching for a desired tape portion in a d

1990-04-20

1993-08-03

Psitos, Aristotelis

Dynamic information storage or retrieval

Signal processing by storage and subsequent retrieval

369 59, H04N 576

Patent

active

052335933

ABSTRACT:
There is disclosed a circuit for inhibiting overwriting used in a WORM (Write Once Read Many) type optical disk driver. The circuit analyzes the signal read from the disk just before the write data is emitted from the WORM type optical disk driver, to produce an overwrite error signal when the pitted portion storing data is overwritten, so that the system control interrupts the writing operation according to the error signals, thus preventing data destruction.

REFERENCES:
patent: 4631706 (1986-12-01), Batalden et al.
patent: 4680594 (1987-07-01), Bracht
patent: 4831611 (1989-05-01), Sasaki et al.
patent: 5060218 (1991-10-01), Chiyomatsu

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